http://qiserver.ugr.es/cod/2310399.cif
http://qiserver.ugr.es/cod/2310464.cif
http://qiserver.ugr.es/cod/2310494.cif
http://qiserver.ugr.es/cod/2310495.cif
http://qiserver.ugr.es/cod/2310716.cif
http://qiserver.ugr.es/cod/2310718.cif
http://qiserver.ugr.es/cod/9016056.cif